public final class CompletionTokenStream extends TokenFilter
ConcatenateGraphFilter
but we can set the payload and provide access to config options.AttributeSource.State
input
DEFAULT_TOKEN_ATTRIBUTE_FACTORY
Modifier and Type | Method and Description |
---|---|
boolean |
incrementToken()
Consumers (i.e.,
IndexWriter ) use this method to advance the stream to
the next token. |
void |
setPayload(BytesRef payload)
Sets a payload available throughout successive token stream enumeration
|
Automaton |
toAutomaton()
Delegates to...At
|
Automaton |
toAutomaton(boolean unicodeAware)
Delegates to...
|
close, end, reset
addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, endAttributes, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, removeAllAttributes, restoreState, toString
public void setPayload(BytesRef payload)
public boolean incrementToken() throws java.io.IOException
TokenStream
IndexWriter
) use this method to advance the stream to
the next token. Implementing classes must implement this method and update
the appropriate AttributeImpl
s with the attributes of the next
token.
The producer must make no assumptions about the attributes after the method
has been returned: the caller may arbitrarily change it. If the producer
needs to preserve the state for subsequent calls, it can use
AttributeSource.captureState()
to create a copy of the current attribute state.
This method is called for every token of a document, so an efficient
implementation is crucial for good performance. To avoid calls to
AttributeSource.addAttribute(Class)
and AttributeSource.getAttribute(Class)
,
references to all AttributeImpl
s that this stream uses should be
retrieved during instantiation.
To ensure that filters and consumers know which attributes are available,
the attributes must be added during instantiation. Filters and consumers
are not required to check for availability of attributes in
TokenStream.incrementToken()
.
incrementToken
in class TokenStream
java.io.IOException
public Automaton toAutomaton() throws java.io.IOException
java.io.IOException
ConcatenateGraphFilter.toAutomaton()
public Automaton toAutomaton(boolean unicodeAware) throws java.io.IOException
java.io.IOException
ConcatenateGraphFilter.toAutomaton(boolean)
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